Exhaust silencer



March 6, 1934. T. TRANSKSKUS EXHAUST SILENCER Filed May 7, 1932 2Sheets-Sheet l EII ILH I L KFuW IIIL EIu March 6, 1934.

T TRANSISKUS EXHAUST SILENCER Fi led May 7, 1932 2 SheetsSheet 2Inventor A Home y Patented Mar. 6, 1934 UNITED STATES PATENT OFFICE 1Claim.

This invention relates to exhaust silencers for internal combustionengines and the like, and in accordance with the present invention anexhaust silencer is provided such as could be used in internalcombustion engines whether of the four, six, eight cylinder or any othertype of engine embodying a greater number of power cylinders and whichwill be found eflicient for effectively silencing the driven charge ofthe exhaust gases.

The invention together with its numerous objects and advantages will bebest understood from a study of the following description taken inconnection with the accompanying drawings where- Figure 1 is a top planview of an exhaust silencer forming part of the invention, the samebeing shown applied to a four cylinder engine, certain parts of thesilencer being broken away and shown in section.

Figures 2 and 3 are sectional views taken substantially on the lines 2-2and 33 respectively of Figure 1.

Figure 4 is a view similar to Figure 1 of a slightly modified form ofthe invention, the same being shown applied to a four cylinder internalcombustion engine.

Figure 5 is a side elevational view of the silencer shown in Figure 4.

Figure 6 is a top plan view of still another form to an eight cylinderinternal combustion engine.

Figure 7 is a perspective view of a perforated cone and curved ductassociated therewith forming a part of the invention.

Referring more in detail to the drawings and particularly to Figures 1to 3 inclusive, it will be seen that my improved exhaust silencercomprises a rectangular casing 5 having at one end upper and lowertapered branches 6 merging into elongated extensions '7 curved adjacenttheir free ends as at 8, and at said free end being curved andapproaching one another as at 9.

The casing 5 provides a relatively large chamber which as shown inFigure 1 is connected to the exhaust manifold M of a four cylinderinternal combustion engine E through the medium of a pipe 10.

Arranged in the chamber or casing 5 is a baffle member having an openingtherethrough and including a substantially conical end portion 11 and asubstantially squared end 12. The conical end 11 is perforated as shown.Also arranged in the casing 5 at relatively opposite sides of thebafiie,

are curved passage forming shells or members 13 that taper at one end,and which at their smallest of the invention, the same being shownapplied V ends are divided by relatively small partitionsproviding foreach passage forming member 13 a pair of outlets 14.

As shown in Figure 1 the members 13 are arranged with their widest orflared ends disposed between the bafile and the proximate walls of thecasing or chamber 5, and with their outlet ends approaching one another.

Suitably supported between the extensions '7 adjacent the ends 9 thereofis a conical or funnel shaped member 15. p

In actual practice and from the above it will be apparent that theexhaust gases pass from the manifold M into the chamber or casing 5 andthrough the bafiie, certain of the gases passing 79 through the outlet12 of the baflle while other of the gases pass through the perforationsand then through the conduits 13 to finally discharge from the silencerthrough the outlets 6 and extensions 7, the ends 9 of the extensionsbeing such that the gas streams issuing therefrom are directed towardone another and across the ends 9 for drawing the gases through theconduits.

As is apparent, the baffle and the conduits 13 facilitate the breakingup of the exhaust gas into 30 particles, thus facilitating the passageof the gas stream through the silencer.

At the same time through the provision of the funnel 15 a current of airis directed across the discharge ends 9 of the conduits 1 to createsufllcient suction for drawing the gases through the conduits.

The form of the invention shown in Figure 5 is substantially identicalwith that shown in Figures 1 to 3 as above described, it being noted,that the form of the invention shown in Figures 4 and 5 is adapted foruse with a four cylinder internal combustion engine in such a manner asto provide for the feeding of the exhaust gases into the chamber 5' fromrelatively opposite sides of the chamber; and accordingly a pipeextension 10' leads from one side of the manifold M and through one sideof the casing 5' and diagonally of the casing while a second pipe 10leads from a relatively opposite end of the exhaust manifold M and atits free end extends into the chamber or casing 5' from a relativelyopposite side thereof and also diagonally and in proximity to the innerend of the pipe 10'.

In the form of the invention shown in Figure 6, it will be seen that-theexhaust silencer comprises a casing 5a that at one end is provided witha pair of rearwardly extending curved exhaust branches 6a, the concavedsides of which are disposed in confronting relation so that the gasstreams discharging from the branches 6a are directed against oneanother. At this end of the casing there is also arranged within thecasing an apertured bafile member which includes a substantially conicalend 7a arranged within the casing and a substantially rectangular end 7bdisposed externally of the casing between the branches 611.

There is also arranged in the casing 5a a second bafile 11" and a pairof conduits 13" arranged at opposite sides of the baflle 11" as clearlyshown in broken lines in Figure 6.

In this last described form of the invention the exhaust gases from theinternal combustion engine are admitted into the casing 5a through anend wall thereof, a pipe 10a being provided for this purpose, and havingbranches 10b extending therefrom and connected with the exhaustmanifolds M", it being noted that this form of the invention isillustrated as used in conjunction with an eight cylinder internalcombustion engine.

Even though I have herein shown and described the preferred embodimentsof the invention, it is to be understood that I am fully aware thatother forms of the invention may be resorted to in actual practice, andaccordingly intend'in no wise to limit the invention beyond therequirements of the prior art and scope of the appended claim.

Having thus described my invention, what I claim as new is:

An exhaust silencer for internal combustion engines comprising a shelllike casing having a pair of integral conduit tubes extending inlaterally spaced relation relative to one another from one end of thecasing, said conduit tubes having the free ends thereof curved towardone another to direct the gas streams discharging therefrom against oneanother, a bafile arranged within said casing intermediate the endsthereof, said baiile having an opening therethrough and also having asubstantially conical intermediate body por tion and a substantiallyrectangular end, and relatively short arcuate conduits arranged in thecasing at opposite sides of said bailie, said last named conduitstapering and having their smallest ends confronting to direct theexhaust streams discharging therefrom against the exhaust streamdischarging from the rectangular end of the bafiie; and an air funneldisposed between the first named conduit tubes adjacent the curved endsthereof for directing a current of air, due to the movement of thevehicle, between the said ends of said first named conduit tubes,

- THEODORE TRANSISKUS.

